:root{--bg:#fbf9ff;--fg:#26233a;--accent:#4a3fa0;--accent-fg:#fff;--card:#fff;--line:#e2ddf2;--muted:#6a6680}
@media (prefers-color-scheme:dark){:root{--bg:#171526;--fg:#ece9f8;--accent:#8f84ee;--accent-fg:#14122a;--card:#221f38;--line:#38345a;--muted:#a8a3c4}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.8;font-size:16px}
a{color:var(--accent)}
.wrap{max-width:880px;margin:0 auto;padding:0 16px}
.narrow{max-width:720px;margin:0 auto;padding:24px 16px}
.site-header{border-bottom:1px solid var(--line);background:var(--card)}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 16px;padding-top:10px;padding-bottom:10px}
.brand{font-weight:700;font-size:1.2rem;text-decoration:none;color:var(--accent)}
nav{display:flex;flex-wrap:wrap;gap:4px 14px;font-size:.9rem}
nav a{color:var(--fg);text-decoration:none}
.hero{background:var(--accent);color:var(--accent-fg);padding:36px 0}
.hero a{color:inherit}
.hero h1{font-size:1.7rem;line-height:1.45;margin:.2em 0 .5em}
.kicker{margin:0;font-size:.9rem;opacity:.9}
.btn{display:inline-block;background:#ffd45c;color:#2a2200;font-weight:700;text-decoration:none;padding:14px 26px;border-radius:999px;border:0;font-size:1rem;cursor:pointer}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.hero a.btn{color:#2a2200}
.cta{margin:20px 0 8px}
h2{font-size:1.25rem;margin:2em 0 .6em;padding-left:.6em;border-left:5px solid var(--accent)}
h1{line-height:1.4}
.cards{display:grid;gap:12px;grid-template-columns:1fr}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:inherit;text-decoration:none}
.card h3{margin:.1em 0 .3em;font-size:1.05rem}
.card p{margin:0}
a.card:hover{border-color:var(--accent)}
.list{padding-left:1.3em}
.small{font-size:.85rem;color:var(--muted)}
.hero .small{color:inherit;opacity:.85}
.box{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:10px 14px}
.form{display:grid;gap:12px;max-width:480px}
.form label{display:grid;gap:4px;font-size:.95rem}
.form input,.form select,.form textarea{font:inherit;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg);width:100%}
.form .check{display:flex;gap:8px;align-items:flex-start}
.form .check input{width:auto;margin-top:.5em}
.site-footer{border-top:1px solid var(--line);margin-top:48px;padding:20px 0;font-size:.9rem;color:var(--muted)}
.policy h1{font-size:1.5rem}
@media (min-width:640px){.cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.hero h1{font-size:2.1rem}}